<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="bootstrap/css/bootstrap.css">
<link rel="stylesheet" href="bootstrap/css/bootstrap-theme.css">
<script src="bootstrap/js/jquery-3.2.1.js"></script>
<script src="bootstrap/js/bootstrap.js"></script>
<style>
.top {
border: 1px solid red;
overflow: hidden;
}
.pull-left {
width: 200px;
height: 200px;
background-color:blue;
}
.pull-right {
width: 200px;
height: 200px;
background-color: green;
}
</style>
</head>
<body style="background: white;">
<!--浮动的使用-->
<div class="container">
<div class="top">
<div class="pull-left"></div>
<div class="pull-right"></div>
</div>
</div>
</body>
</html>
